Why Is an Absorption Spectrum Especially Useful for Astronomers

question 8

Multiple Choice

Why is an absorption spectrum especially useful for astronomers?

• A) It has dark lines in it that allow astronomers to determine what elements are in the star
• B) It has bright lines in it which allow astronomers to determine how bright the star is
• C) It helped astronomers to understand the rainbows we see on Earth after storms
• D) It shows that the stars are transparent; we can see right through them
• E) An absorption spectrum is not useful to astronomers at all. When they see one, it means they cannot learn anything about the stars that produced the annoying absorption.

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